The Modern Warfare developers have been teasing the release of a new master camo for the last month and now the developers have released a rough estimate on when the new camo will be introduced into the game.
Scheduled to arrive mid-way through season 3, Joe Cecot has revealed that it is going to "take a long time" to unlock. One of the requirements to begin progress towards the new camo is that you must have gold camo already unlocked for the weapon.
You don't need to have gold camo unlocked for every single weapon in the game in order to earn this new camo.